NN2025081602/app/Services/DeepSeekService.php

<?php

namespace App\Services;

use thiagoalessio\TesseractOCR\TesseractOCR;

/**
 * DeepSeek服务管理-服务类
 * @author laravel开发员
 * @since 2020/11/11
 * @package App\Services
 */
class DeepSeekService extends BaseService
{
    // 静态对象
    protected static $instance = null;

    protected $debug = true;
    protected $expireTime = 7200; // 缓存日志时长
    protected $apiKey = '';
    protected $apiName = '';
    protected $apiurl = '';

    // 接口地址
    protected $apiUrls = [
        // 授权登录
        'deepseek-chat' => '/chat/completions',
        'deepseek-reasoner' => '/chat/completions',
        'upload' => '/v1/ocr/invoice',
    ];


    public function __construct()
    {
        $this->apiUrl = ConfigService::make()->getConfigByCode('dk_base_url');
        $this->apiKey = ConfigService::make()->getConfigByCode('dk_api_key');
        $this->apiName = ConfigService::make()->getConfigByCode('dk_api_name');
    }

    /**
     * 静态入口
     * @return static|null
     */
    public static function make()
    {
        if (!self::$instance) {
            self::$instance = new static();
        }

        return self::$instance;
    }


    /**
     * AI 分析接口
     * @param $params
     * @param string $model
     * @return array|false|mixed
     */
    public function apiRequest($params, $model='deepseek-chat')
    {
        if(empty($this->apiUrl) || empty($this->apiKey) || empty($this->apiName)){
            $this->error = 'AI接口参数未配置';
            return false;
        }

        $headers = [
            'Content-Type: application/json',
            'Accept: application/json',
            'Authorization: Bearer ' . $this->apiKey
        ];
        $answer = isset($params['answer'])? $params['answer'] : '';
        $topic = isset($params['topic'])? $params['topic'] : '';
        $score = isset($params['score'])? $params['score'] : 0;
        $content = "你是一个答题高手";
        $message = "题目为【{$topic}】的答案【{$answer}】总分共{$score}分能得多少分？请返回针对该题目的包含score字段评分、topic字段题目内容以及analyze题目解析字段的结果";
        $data = [
            'model'=> $model,
            'messages'=> [
                [
                    'role' => 'system',
                    'content' => $content
                ],
                [
                    'role' => 'user',
                    'content' => $message
                ],
            ],
            'stream' => false, //false 非流  true//流返回，需要前端追加和保持长连接
            'response_format'=>[
                'type'=>'text' //返回格式（text,json_object）
            ],
            "max_tokens"=>2048, //最大返回token数
        ];


        $url = $this->apiUrl.$this->apiUrls[$model];
        $result = aiRequest($url, json_encode($data), 20, $headers);
        $choices = isset($result['choices'])? $result['choices'] : [];
        $choiceData = isset($choices[0]['message'])? $choices[0]['message'] : [];
        $choiceContent = isset($choiceData['content'])? $choiceData['content'] : '';
        $content = $choiceContent? str_replace('\n','', $choiceContent) : '';
        $content = $content? json_decode($content, true) : [];
        return $content;
    }


    /**
     * 上传图片
     * @param $image
     * @return false
     */
    public function upload($image)
    {
        if(empty($this->apiUrl) || empty($this->apiKey) || empty($this->apiName)){
            $this->error = 'AI接口参数未配置';
            return false;
        }

        $headers = [
            'Content-Type: application/json',
            'Accept: application/json',
            'Authorization: Bearer ' . $this->apiKey
        ];


        $filePath = ATTACHMENT_PATH.get_image_path($image);
        $obj = new \CURLFile($filePath);
        $data = [
            'image'=> $obj,
        ];
        $url = $this->apiUrl.$this->apiUrls['upload'];
        $result = aiRequest($url, $data, 10, $headers);

    }

    /**
     * 获取题目内容
     * @param $imageUrl
     * @return false
     */
    public function getImageTopicData($imageUrl)
    {
        if(empty($imageUrl)){
            return false;
        }
        // 图片获取数据
        if(preg_match("/(images|temp)/", $imageUrl)){
            $path = get_image_path($imageUrl);
            $ocr = new TesseractOCR();
            return $ocr->recognize(ATTACHMENT_PATH.$path);
        }

        return $imageUrl;
    }
}